Steam-boiler



WITNESSES:

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H. POND. STEAM BOILER.

Patented Aug. 9, 1881.

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NiTEn STATES PATENT Darren.

GOLDSBURY H. POND, OF NEW YORK, N. Y., ASSIGNOR TO HATTIE M. POND, OFASHBURNHAM, MASSACHUSETTS.

STEAM-BOILER.

SPECIFICATION formingpart of Letters Patent No. 245,400, dated August 9,1881.

Application filed October 9,1880. (No model.)

To all whom it may concern:

Be it known that 1, GOLDSBURY H. POND, a citizen of the United States,residing at New York city, in the county and State of New York, haveinvented certain new and useful Improvements in Steam-Boilers, of whichthe following is a specification.

My invention consists in forming boiler-sections by uniting two sets ofupright tubes, one

[0 located concentrically within the other, with two horizontal tubes,one at each end of the upright set of double tubes, the horizontal tubesprojecting beyond the furnace-casing, the upper horizontal tubesconnected with a steam-drum outside of the furnace-casin g, saidconnections serving to retain the outer set of tubes in position, andthe end of the lower horizontal tube connected with a water-drum, alsolocated outside the furnace casing, the

said section having a disk placed in the passage between the steam-drumand each section, said disk being perforated with one or more holes forthe steam to pass through to the steam-drum, for the purpose ofregulating 2 the amount of steam drawn from each section to preventexhausting the steam in a section and sucking the water up into thesteam-drum, usually called flooding or foaming, and which occurs whenthe throttle-valve is sud- 0 denly thrown wide open.

The object of my invention is to simplify construction, to avoid joints,bolts, or seams in that part of the boiler that comes in contact withthe fire, entirely overcoming the 3 5 cause of leakage from contact ofjoints with fire; also, to regulate the flow of steam from each sectionindependent of the other, for the purpose of preventing flooding orfoaming. I attain these objects by the mechanism illustrated by theaccompanying drawings, in

which-=- Figure 1 is a side elevation of my improved boiler, a portionof the upper horizontal pipe broken away to show the disk for regulating4 5 the flow of steam from the section to the steamdrum. Fig. 2 is thesteam-drum. Fig. 3 is an end View of the sections before the steam andwater drums are attached. Fig. 4 is the water-drum. Fig. 5 is theperforated regulatingdisk. Fig. 6 shows a perspective View of myimproved boiler, representing a front and side elevation, the casingbeing removed. Fig. 7 shows a front elevation with one section of theboiler in place. This figure also shows the sectional detail composingthe different sets of tubes and their mode of fastening.

A is the main upright water-tube. B is the small or fire tube within it.0 is the horizontal tube at the top. Dis thelower horizontal tube. E isthe steam-drum. F is the water-drum. G is the perforated regulating-diskfor controlling the flow of steam from each section to the steam-drum.

The drums E and F are coupled to the projecting ends of the horizontaltubes of the sections outside of the walls of the fire-space, so thatthejoints do not come in contact with the fire. The joints are made bymeans of the flanges H and I, which are held together by any suitablemeans.

The disk Gris held in place by being properly fitted and then driven inflush with the flange. I The flange of the steam-drum, being a littlesmaller, holds it in place.

Having described my invention, what I claim as new is 1. A steam-boilerthe sections of which are formed by a double set of perpendicular tubes,one set located concentrically within the other, and these connected ateach end with horizontal tubes, the said horizontal tubes projectingbeyond the wall of the fire-space,'the upper ones connected to asteam-drum, and having interposed between the joints a perforatedseparating-disk, and the lower one connected with awater-drum,alsooutside the wall of the fire-space, substantially as and for the purposeset forth.

2. A steamboiler provided with a perforated disk to partly close theopening from each section to the steam-drum for the purpose ofregulating the flow of steam from the sections to the steam-drum, and toprevent the drawing up of water and flooding the steam pipe and engine,combined and arranged sub- 5 stantially as and for the purpose setforth.

3. A sectional steam-boiler composed of a tions being provided with aperforated sepadouble set of vertical tubes, A and B, one setrating-disk, substantially as and for the purwithin the other, the endsof said tubes being pose set forth.

secured to a third set, 0 D, arranged horizon- GOLDSBURY H. POND. 5tally, one below and one above, the horizontal Witnesses:

set being secured to afourth set outside of the EMMA H. POND,

fire-space, the upper and steam receiving sec- H. M. POND.

